Dr. Prometheus wants to describe the attitudes of all 18-year-old Houstonians concerning the legalization of marijuana. She randomly picks 500 people of that age to fill out her survey. In this study, the population being measured is:

The sample size        

Explanation:

Dr. Prometheus wants to describe the attitudes of all 18-year-old Houstonians concerning the legalization of marijuana. She randomly picks 500 people of that age to fill out her survey. In this study, the population being measured is the sample size. The sample size of a study is the number (n) of observations taken from a population through which statistical inferences for the whole population are made or the number of respondents whose data regarding the study is the basis for the research conclusion.

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